Robust build quality: Made from tire grade solid rubber wheels paired with sturdy steel components, these gate casters deliver outstanding durability and loadbearing capabilities for longlasting outdoor use. Supports heavy weights: Capable of supporting up to 500 pounds, these casters prevent sagging gates and ease hinge strain, ensuring smooth functionality over time. Flexible compatibility: Featuring a 6 wheel diameter along with an adjustable steel U bolt, they fit gate frames measuring between 1 5/8 to 2 inches in diameter for adaptable usage. Quick installation process: Installation is hassle; simply attach the wheels to the bottom pipe of your gate. Use scenarios: Residential driveway gates exposed to weather and wind: improves reliability and reduces effort required to open or close the gate. Farm or barn gates with heavy leaf and frequent use: supports heavy loads up to 500 pounds and minimizes gate sag and hinge strain. Commercial or property gates with frames in the 1 5/8 to 2 inch range: easy retrofit to enhance performance and longevity with minimal installation effort.